usr/src/bin/sh/mail.h

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kenneth Almquist.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)mail.h      5.1 (Berkeley) %G%
 */

#ifdef __STDC__
void chkmail(int);
#else
void chkmail();
#endif